Induction-coil.



PATENTED FEB. 12, 1907.

' O. L. BOPP.

INOOOTION OOIL.

APPLICATION EILED 00T.2l, 1905.

Witwe/.inea

UNITED sTATns PATENT orrroe;

CLINTON. L. BOPP, OF HAWKEYE, IOWA, ASSIGNOR OF ONE-FOURTH TO JOHNv BEAL, OF WHITTIER, CALIFORNIA..

lNucTloN-GOIL.

Specification of Letters Patenti Patented Feb. 12, 1907.

Application led October 21,1905. Serial No. 283,818.

T (L7/Z wiz/0m it may' concern:4 Be it known that I, CLINTON L. BOPP, a

ycitizen of the United States, residing vat full, clear, and exact description ofthe invention, such as will enable others skilled in 4the art to which it appertains to make and use the same.

This inventionrelates tojmprovements in induction-coils, and particularly to those kind that will produce a pulsating and alternating currentat will. j

The object in view isthepr'oduction of means for producing comparatively high lpotential alternating currents from a comparatively low potential pulsating current.

A further object in view is the provision of means for producing at will either alternating or pulsating currents at comparatively high potential from pulsating currents of comparatively low potential.

With these and further. objects in view this invention consists in the combination,

witha soft-iron core surrounded by inner windings of comparatively large wire and the outer. windings of comparatively tineA wire, of two sets of electrical magnets for making and breaking the circuit in order to produce pulsating currents in theprimary winding of the coil and alternating or pulsating currents of higher potential in the second- 3g ary winding.

This invention also consists in certain other novel constructions,combinations, and arrangement of parts, as will be hereinafter fully described and claimed.

In the drawing the figure represents a `diagrammatic view of one embodiment of my invention,

It has been desirable in telephone test sets or for use in ringing signal-,bells to have a de- .vice which could produce either an alternating or pulsating current. The inductioncoil which forms the subject-matter of the present invention is designed to supply this need, as it will produce an alternating current for telephones or a pulsating current for I polarizedbells at the will of the operator by j simply switching either line in or out, as In: jf

be desired.

In carrying out the features of the present invention I employ an induction-coil consisting of a sott-iron core 1, preferably of tine wire, a primary 'winding 2 of compara- Atively large Wire7 and a secondarywinding 3 of comparatively iine wire .wound on a suitable number of spools 4 and connected in series.

5 indicates a suitable boX containing the induction-coil and having on one side there-A of avibrator 6 and a relay 6a, that is used for producing the pulsation in the secondary winding when pulsating currents are needed.

The vibrator consists of a pair of electrol magnets 7 for attracting a suitable armature 8, with an adjustable weight 9 placed on the armature 8 for regulating the vibration of said armature. Adjusting-screws 10 and 1 1 are also employed to limit the vibration of thearmature, as wellas to form bindingposts for the electrical circuits. The armature is secured to a spring 12 which is rigidly .fastened at 13 and has spring-vibrators 14 and 15 for making contact alternately with said screws l0 and 11.

Connected inY series with the vibrator is a device Y thatV may be termed a relay for producing pulsating current inthe secondary winding. This relay consists cfa pair of electromagnets 16 and armature 17, .held in place by a suitable spring 18 and an adjusting-screw 19. There is also a weight 20 placed on the outer end of the supportingspring 18 for regulating the vibration of the armature 17. '1`he normal position oi the armature is such thatlthe contact-points 21 and 22 are held out of contact, so that no current will lowthrough the relay unless the armature has been drawn down by kan independent source of electricity. The magnets of the vibrator and relay are connected inseries through Wire 23, the vibrator 14', armature-s ring 12,'wires 24, 25, 26, 27, and 28,

and t ence through a closed-circuit battery 29. .A current of electricity7 passing" 'fromtricity through the primary winding, as will presently be described. -W henthe armature bell' 49,wire 50., SWitChOQa-ndliack through 14 of the vibrator has been attracted by a current of electricity passing through the magnet 7, the vibrator 15 will contact with setscrew 11, closing the primary circuit. When the primary circuit is thus closed, a currentof electricity willilow from the battery 32 through binding-post 33, wire 34, set-screw 11, armature 8, armature-'spring 12, wire 2 4, wire 34', and thence through the winding 2, wire 35, and back to the battery 32 through lWire 35 and the binding-post 36. In the primary Winding is placed a condenser 37 to bridge across/the contacts of vibrator 14. and set-screws 11.

When it is necessary to secure an4 alterbinding-posts 30 and 31, which will cause the vibrator to make andbreak the circuit oi the primary winding, thus causing a pulsating current to ilow from battery 32 through said primary winding. A's the pulsations rise-inl the primary winding 2 the lines of force will pass upward and be cut by the secondary Winding, causin an induced current of electricity to flow t ough Wires 38 and 39, and

'force will gradually contract. and again are cut by the secondary winding, which will cause an.l induced current to dow through wires 38 and v39 in an opposite direction to the iir'st induced current. `As the pulsations 4c ontinue'in the primary Winding this alternating `current will continue to flow and' with as rapid alternations as may be desired, as the vibrator may be cat isedI to vibrate either slowlyor rapidlyby the adjustment of the weight 9 on the spring of the varmature 8. The wire 38 is connected to'binding-post 40, through which the current passes, -then through a switch 40, when the same is closed, Wire 50, any suitable device, asa bell 44, using alternating currents, thence through wire 45, switch 46, binding-post 47, wire 39, and back to the 'point/of generation. When it is desireddo secure pulsating currents, the battery `29 is connected to the binding-posts 30 and 31 and the' current from-said battery passes through the same Winding as when it is desired to secure alternatingcurrents; but the pulsating current is -received from4 binding-posts 40and 41. 'As the vibrator causes the'primary circuitto send pulsations through the winding 2 the.,

lines of force will be projectedthrough the secondary windin thus causing an induced current to flow' t ough Wires 39 and 42, switch 46 being open, contacts 21' and 22,

armature 17, armature-spring 18, wire 43',v

binding-postf'i-l, through Wire 48, any suitable 'device usingI pulsatingcurrents, as a binding-posts() and wire 3 8 to thev point of f generaticm'thus completiugt-he circuit.

'zWhen the pulsation in the primary windvnating current, battery 29 is connected to as the current decreases inl coil 2 the lines'of the primary ing decreases, the lines oiforce will contract, but no current will flow from the secondary winding, as the magnets 16 have released the vibrator arm or armature 17 thus opening the circuit. By thus closing the `circuit of the secondary winding at every other alternation a pulsating current of electricity of comparatively high potential is secured from a pulsating current of comparatively low potential.

Having thus fully described my invention,

vwhat I claim asnew, and desireto secure by .Letters Patentf'is-` 1. The combination with an induction;

coil havingv two separate generators of elec-,

tion for sending pulsating currents through the primary Winding oi said induction-coil. 2. An induction-coil comprising a core, a primary winding and secondary winding, andmeans for securing alternating and pulsating f currents at'will from said secondary winding'.

3. The combination with anl inductionv coil, of a vibrator for causing pulsatio'n of an electrical current to pass through the primary winding of said induction-coil a second.

,vibrator or relay for suppressing one of the.

alternations induced in the second-ary windand secondary winding, meansfor causing an electrical current to pass thr ugh the primary winding, a vibrator conne ed in' series with the means fonprodueing' pulsation' in the primary'winding for transmittin pulsating currents from the secondary win "ng IOO ' 5.'An induction-coil comprising a core, a

plurality of windin s, andl means for securing alternating andy p satingcurrents fro'l'n one oisaidwindin s.

6. The com ination with aninductioncoil of a vibrator, comprising an interrupting device, and means for permitting a pulsating current of electricity' to pass throughpthe primaryv winding of said induction-coil, the saidv current being derived'rom an independent source to that cfa current operating said vibrator.

'7.' The combination" with. an inductioncoil, of a vibrator for causing pulsating current-s to pass ythrough the primary windlng of said induction-ooit, a second vibrator 4connectedinf series withthe iirst `vibrator for permitting only one-of the induced currents4 to ilowfrom the secondary Winding.

TIO

'8. The combination with an 1nduction' coil, of a vibratorvor sending pulsating cur-v .j j 95 4'. Aninduction-coil'comprising a primary i 9 iThe combination with an induction- `coil, of a vibrator, means for furnishing current to the said Vibrator,y and independent v`means for furnishing pulsating current to the primary winding of said induction-coil.

10. Thecombination with two sources of electrical current, of an induction-coil comprising a core, a .plurality of windings, means for causing the current from' one of said sourcesto permit pulsating currents to flow from the other source of electrical energy.

.11. An induction-coil comprising a primary and a secondary winding, means for causing apulsating currentto pass through said primary winding, and means for produc- `ing pulsating currents in said-- secondary said secondary windingl of higher potential than' the potential of thecurrent passing through said primary winding.

13. induction-coil comprising a primary and secondary winding,` means for causing electrical current to pass through said primary winding', and means for producy ing pulsating and alternating currents -from said secondary Winding.

14. An 'induction-coil comprising a primary winding, and -a secondary Winding, means for passinga current through said primary minding, vmeans for lreceiving pulsating currents from said secondary windin and means for Varying .the pulsation of sa' current. e

15. The combination with an inductioncoil, ofa vibrator comprising an interrupting device, means for permitting a current oi 'electricity to pass throu h the primary Winding of said induction-coi 'and means for producing a pulsating current in the secondary winding.

16. The combination with an inductioncoil, of a Vibrator for permitting pulsating in presence of twowitnesses.

4 CLINTON L BOPP. Witnesses:

l S. H. "BrvENs,

A. H. BRooKs. 

